Throttle Valve Actuator Motor Relay - Ducati Diavel Workshop Manual

Introduction to the engine control system
CCM engine control connection, T injection relay. 85 brown/black – Bn/Bk injection relay activation, 87 brown/white-Bn/W
ECU input voltage, U direct power to injectors, ignition coils and fuel pump, R battery power (+30), 30 and 86 brown -
Bn.
In the event of fault
In the event of an injection relay fault, the engine stops (if running) or will not start. The relay is not commanded by the
ECU.
Fault codes generated and possible correlated faults
Fault codes generated by the engine control unit and displayed by the DDS (Fuel injection relay diagnosis):
- Open circuit: check integrity of fuses, electrical circuit and electrical connections.
- Short circuit to ground: check integrity of fuses, electrical circuit and electrical connections.
- Short circuit to Vdc: check integrity of electric circuit and electrical connections.
Note
Check integrity of electric circuit – short-circuit to Vdc = with dashboard on, using a voltmeter, a voltage is measured
between the wire tested and ground.
Check integrity of electric circuit – short-circuit to ground = with the battery cables disconnected, using an ohmmeter,
continuity is detected between the wire tested and ground.
Check integrity of electric circuit – open circuit = with the battery cables disconnected, using an ohmmeter, no continuity
is detected between the two ends of the wire tested.
The dashboard service display shows the error "Fuel Injection" and the EOBD warning light activates.
Possible correlated faults: the engine stops (if running) or will not start. Check:
- Integrity of fuses
- Relay function. After removing from its mounting, apply 12 V power to PIN 85 and PIN 86 of the relay and check that
PIN 87 and PIN 30 close (continuity between pins)
Using the DDS, activate the ignition coils, the fuel pump or the injectors. The injection relay is driven and its contacts
(PIN 87 and PIN 30) should close.
If none of the aforementioned tests identify the problem and the relay is in proper working order, replace the engine
control unit.
Component replacement methods
No special measures are necessary in order to replace the injection relay.

Throttle valve actuator motor relay

Introduction
The throttle valve actuator motor is powered by the engine control unit. The engine control unit receives the necessary
power from a specific relay.
Component assembling position